Question

Biogas is a better fuel than animal dung cake because:

Options

• biogas has a lower calorific value.

• animal dung cake has a high calorific value.

• biogas bums smoke and leave no residue.

• biogas is used as a fuel for cooking only whereas dung cake can be used for cooking, illuminant the lanterns.

Answer 1

biogas bums smoke and leave no residue.

Explanation:

Biogas has high calorific value and leave no residue, no smoke after burning and can be used for domestic purpose, running engines and in gas lanterns for illumination.